Side by side

Serica Ref. 5303 Diving ChronometervsSternglas Sedius

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
Sedius
SternglasSedius
MSRP $301

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Sedius40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Sedius
Water Resistance
Ref. 5303 Diving Chronometer300m
Sedius50m
MSRP
Ref. 5303 Diving Chronometer$1,768
Sedius$301

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
39mm
40mm
Thickness
12.2mm
8mm
Lug-to-Lug
46.5mm
47mm
Water Resistance
300m
50m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
M100 COSC
TMI VH31
Type
Automatic
Quartz
Power Reserve
42h
Jewels
25
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$301

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Sternglas Sedius

The Sternglas Sedius is widely praised for its harmonious blend of Bauhaus minimalism and Art Deco elegance, featuring a well-balanced sector dial and a smooth-sweeping seconds hand from its Seiko VH31 meca-quartz movement. Owners and reviewers note its pleasing wearability due to the case shape and slender lugs, and it is considered an affordable option with a good price-performance ratio. One reviewer flags legibility issues on the black dial variant, while the blue-on-white offers crispness. The Sternglas Sedius lacks a date complication and features a double-domed sapphire crystal. Overall, owners and reviewers rate the Sternglas Sedius highly for its classy Art Deco aesthetic and value.

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